I have mice in the apartment, and I am interested in using an ultrasonic repeller device. However, I read the following online:
"Humans can hear sound at frequencies up to about 23,000 Hz (Hertz). Louisiana State University researchers report that mice and rats are sensitive to sound up to 60,000 and to about 76,000 Hz, respectively. However, common house pets such as cats and dogs can also hear ultrasonic frequencies. Cats can perceive sound up to about 64,000 Hz, and dogs perceive sounds up to 45,000 Hz. You should consider not using noise as a repellent for mice if you have pets."
While the gap between dogs (45,000 Hz) seems pretty far from the mouse level (up to 60,000 Hz), do commercially-available ultrasonic repellers fall in the "safe range" for dogs?